find_package(Doxygen REQUIRED OPTIONAL_COMPONENTS dot)

###############################################################################
# store the current dir, so it can be reused later
set(
  ITK_WRAP_DOC_SOURCE_DIR
  "${CMAKE_CURRENT_SOURCE_DIR}"
  CACHE INTERNAL
  "doc source dir"
)
set(
  ITK_WRAP_DOC_BINARY_DIR
  "${CMAKE_CURRENT_BINARY_DIR}"
  CACHE INTERNAL
  "doc binary dir"
)
